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Beidellite

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Beidellit
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Beidellit

derber Beidellit von Rupsroth, Rhön, Deutschland; Größe: 50x40 mm

Collection: rtbstone
Copyright: rtbstone
Contribution: rtbstone 2008-02-24

Collectors Summary

Color weiß, grau, rötlichweiß, bräunlich weiß, blass gelb
Streak color weiß
Lustre Wachsglanz, Glasglanz
Hardness (Mohs) 1 - 2
Cleavages vollkommen {001}
Solubility +++ Säuren
Crystal System orthorhombisch,

Chemism

Chem­ical formula

(Na,Ca0.5)0.3Al2(Si,Al)4O10(OH)2·4H2O

Chem­ical com­po­si­tion

Aluminium, Calcium, Natrium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 437.947192895 u; Number of atoms in the formula: 32.2625

Info

Empirical formula:

(Na0.75(Ca0.5)0.25)0.3Al2(Si0.75Al0.25)4O10(OH)2·4H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

2.30

10

31.00

1.0079470

10.0794700

Oxygen

O

58.45

16

49.59

15.9994300

255.9908800

Sodium

Na

1.18

0.23

0.70

22.9897702

5.1726983

Aluminium

Al

18.48

3

9.30

26.9815382

80.9446146

Silicon

Si

19.24

3

9.30

28.0855300

84.2565900

Calcium

Ca

0.34

0.04

0.12

40.0784000

1.5029400

Anal­y­sis wt%

SiO2 : 45.83, TiO2 : 0.46, Al2O3 : 22.79, Fe2O3 : 5.71, MgO : 0.86, CaO : 1.41, H2O : 22.34 (Ref: Rock Forming Minerals 62)

Strunz 9th edi­tion incl. updates

9.EC.40

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
C: Schichtsilikate (Phyllosilikate) mit Glimmer Tafeln, zusammengesetzt aus tetrahedralen oder octahedralen Netzen
40:Montmorillonit-Gruppe

Lapis Clas­sifica­tion

VIII/H.19-030

VIII: SILIKATE
H: Schichtsilikate
19: Tonminerale, regulär geschichtet; Glimmerartige Schicht-silikate mit Baugruppen [Si4O10] 4- und verwandte Strukturen; Montmorillonit-Gruppe

Clas­sifica­tion by Hölzel

9.EI.200

9: SILICATES
E: Phyllosilicates
I: Montmorillonite-Saponite-Group

IMA sta­tus

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

weiß, grau, rötlichweiß, bräunlich weiß, blass gelb

Streak color

weiß

Diaphane­ity (Trans­parency)

durchscheinend bis teilweise durchscheinend

Lus­tre

Wachsglanz, Glasglanz

max. Birefrin­gence

0.042

Birefringence chart\! Beidellite title=Birefringence chart Beidellite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.494 - 1.548

RI value β

1.536 - 1.574

RI value γ / ε

1.536 - 1.575

Ri mean

1.541

2V angle

Biaxial (-) 9° - 16°

Optical Data Luminescence

Lumi­nes­cence

keine Fluoreszenz bekannt

Crystallography

Crystal Sys­tem

orthorhombisch

Cell param­e­ters a (Å)

5.17

Cell param­e­ters b (Å)

9.00

Cell param­e­ters c (Å)

15.2

Cell param­e­ters a/b or c/a

0.574

Cell param­e­ters c/b

1.689

Cell param­e­ters α

90°

Cell param­e­ters β

90°..

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

707.256

X-Ray Pow­der Diffrac­tion

12.4(100),
6.20(50),
4.48(80),
3.10(60),
2.57(20),
2.064(10),
1.693(10),
1.496(10)

XRD chart Beidellite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

1 - 2

VHN (Hard­ness Vick­ers)

18 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2 - 2.3 / Durchschnittlich = 2.15

2.056 ( ρ calc. Mineralienatlas )

Cleav­ages

vollkommen {001}

Insta­bil­ity

+++ Säuren

(Co-)Type locality

(Co-)Type locality

USA/Colorado/Saguache Co./Crystal Hill District/Beidell

Type mate­r­ial

National Museum of Natural History, Washington, D.C., USA

Col­lec­tion number of type mate­r­ial

R4762

Preface

Asso­cia­tions

Plagioklas, Quarz, Orthoklas, Montmorillonit, Kaolin, Allophan, Muskovit

Name from

der Typlokalität Beidell, Colorado, USA

Author (Name, Year)

Larsen & Wherry, 1925

References

Handbook of Mineralogy (Anthony et al.), 3 (1997), 70

New Mineral Names - American Mineralogist, Vol. 11 (1926), 167

American Mineralogist, Vol. 47 (1962), 137-146 [orthorhombisch]

American Mineralogist Vol. 70 (1985), 1004-1010

GEORGE E. CHRISTIDIS - Genesis and compositional heterogeneity of smectites. Part III: Alteration of basic pyroclastic rocks - A case study from the Troodos Ophiolite Complex, Cyprus - American Mineralogist: 91: 685-701

Investigation of dioctahedral smectite hydration properties by modeling of X-ray diffraction profiles - American Mineralogist, Vol. 92 (2007), 1731-1743

Significance of the depth-related transition montmorillonite-beidellite in the Bouillante geothermal field (Guadeloupe, Lesser Antilles) - American Mineralogist, Vol. 92 (2007), 1800-1813

Rehydration of dehydrated-dehydroxylated smectite in a low water vapor environment - American Mineralogist, Vol. 97 (2012), 110-127

European Journal of Mineralogy 5 (1993), 623

Canadian Mineralogist 15 (1977), 22

Synthesis and properties of regularyly interstratified (R=2) margarite (0.67) - beidellite , a 34 Å phase - Canadian Mineralogist 36 (1998), 1569-1576

Mineralogical Magazine 25 (1938), 140

A potassium-rich beidellite from a laterite pallid zone in Western Australia - Clay Minerals (1991) 26, 233 - 244

Smectites in the montmorillonite-beidellite series - Clay Minerals (1991) 26, 359-369

Kaolinite/Montmorillonite reembles beidellite - Clays and Clay Minerals, Vol. 42 No. 5 (1994), 643-651

Synthesis of a regularyly interstratified 2:1 margarite and beidellite (34 Å phase) - Clay Minerals (1998) 33, 363 - 367

Metachromasy in clay dye systems: the adsorption of acridine orange by Na-beidellite - Clay Minerals (1999) 34, 459-467

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Saponite

(Ca,Na)0.3(Mg,Fe2+)3(Si,Al)4O10(OH)2·4H2O

9.EC.40

'Hectorite'

Na0.3(Mg,Li)3Si4O10(F,OH)2

9.EC.40

Beidellite

(Na,Ca0.5)0.3Al2(Si,Al)4O10(OH)2·4H2O

9.EC.40

Nontronite

Na0.3Fe23+(Si,Al)4O10(OH)2·4H2O

9.EC.40

Kurumsakite

(Zn,Ni,Cu)8Al8V2Si5O35·27H2O

9.EC.40

Swinefordite

(Ca,Na)0.3(Al,Li,Mg)2(Si,Al)4O10(OH,F)2·2H2O

9.EC.40

Volkonskoite

Ca0.3(Cr3+,Mg,Fe3+)2(Si,Al)4O10(OH)2·4H2O

9.EC.40

Yakhontovite

(Ca,Na,K)0.3(CuFe2+Mg)2Si4O10(OH)2·3H2O

9.EC.40

Montmorillonite

(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O

monoklin : 2/m : C2/m

9.EC.40

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Brinrobertsite

(Na,K,Ca)0.3(Al,Fe,Mg)4(Si,Al)8O20(OH)4·3.5H2O

VIII/H.19-010

Montmorillonite

(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O

monoklin : 2/m : C2/m

VIII/H.19-020

Beidellite

(Na,Ca0.5)0.3Al2(Si,Al)4O10(OH)2·4H2O

VIII/H.19-030

Nontronite

Na0.3Fe23+(Si,Al)4O10(OH)2·4H2O

VIII/H.19-040

Volkonskoite

Ca0.3(Cr3+,Mg,Fe3+)2(Si,Al)4O10(OH)2·4H2O

VIII/H.19-050

Swinefordite

(Ca,Na)0.3(Al,Li,Mg)2(Si,Al)4O10(OH,F)2·2H2O

VIII/H.19-060

Yakhontovite

(Ca,Na,K)0.3(CuFe2+Mg)2Si4O10(OH)2·3H2O

VIII/H.19-070

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Beidellite

(Na,Ca0.5)0.3Al2(Si,Al)4O10(OH)2·4H2O

9.EI.200

Nontronite

Na0.3Fe23+(Si,Al)4O10(OH)2·4H2O

9.EI.220

Other languages

German

Beidellit

Spanish

Beidellita

English

Beidellite

French

Beidellite

Russian

Бейделлит

Alternative Name

Al Montmorillonite

Aluminium Montmorillonite

Chrome-Beidellite

English

Fuller's earth

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Beidellit
Google-Bilder-Suche - search for: Beidellit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Beidellit

English pages

Mindat - search for: Beidellite
Webmineral - search for:Beidellite
Handbook-of-Mineralogy - search for: Beidellite
RRUFF - Raman, XRD and other mineral data - search for: Beidellite
RRUFF - References and PDF downloads - search for: Beidellite
American-Mineralogist-Crystal-Structure-Database - search for: Beidellite
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Russian pages

Webmineral.ru - search for: Бейделлит

Mineral Dealer

German pages

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